M16C65 Datasheet, PDF (466/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
21. Pulse Width Modulator
Data bus
PWM0 prescaler
pre-latch
PWM0 register
pre-latch
Transfer control circuit
PWMEN0
PWMCLK1 and PWMCLK0
f1
1/2 ^=00b
=01b
1/4
=10b
1/8
1/16 ^=11b
PWM0 presclaer
latch
PWM0 prescaler
PWM0 register
latch
PWM0 register
PWMPORT0
PWMSEL0
PD4_6
The above shows an example block diagram of PWM0.
PWMSEL0, PWMCLK1, PWMCLK0 : Bits in the PWMCOM0 register
PWMEN0, PWMPORT0 : Bits in the PWMCOM1 register
PD4_6 : Bit in the PD4 register
PD9_3 : Bit in the PD9 register
Figure 21.1 Block Diagram of PWM
PD9_3
PWM0
PWM0
Table 21.2 I/O Port
Port
I/O
Function
PWM0
O ⁽¹⁾
PWM output
PWM1
Note:
1. Set the direction bit corresponding to selected pin to 1 (output mode)
21.2 Registers
Table 21.3 Register Structure
Address
Register Name
0370h PWM Control Register 0
0372h PWM0 Prescaler
0373h PWM0 Register
0374h PWM1 Prescaler
0375h PWM1 Register
0376h PWM Control Register 1
Symbol
PWMCON0
PWMPRE0
PWMREG0
PWMPRE1
PWMREG1
PWMCON1
After Reset
00h
00h
00h
00h
00h
00h
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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